Add GitHub Actions workflow for build and release process

.gitea/workflows/test.yml

@@ -0,0 +1,49 @@
+name: Build And Release
+
+on:
+  push:
+    tags:
+      - "v*"
+  workflow_dispatch:
+    inputs:
+      tag_name:
+        description: "Tag for the release (for example: v1.0.0)"
+        required: true
+        type: string
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    env:
+      RELEASE_TAG: ${{ github.event.inputs.tag_name || github.ref_name }}
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Setup .NET SDK
+        uses: actions/setup-dotnet@v5
+        with:
+          dotnet-version: "9.0.x"
+
+      - name: Restore dependencies
+        run: dotnet restore FoodsharingSiegen.sln
+
+      - name: Publish server build
+        run: dotnet publish ./FoodsharingSiegen.Server/FoodsharingSiegen.Server.csproj -c Release -o ./artifacts/publish
+
+      - name: Create zip package
+        run: |
+          cd artifacts
+          zip -r FoodsharingSiegen.Server-${{ env.RELEASE_TAG }}.zip publish
+
+      - name: Create release and upload artifact
+        uses: https://gitea.com/actions/gitea-release-action@v1
+        with:
+          files: artifacts/FoodsharingSiegen.Server-${{ env.RELEASE_TAG }}.zip
+          tag_name: ${{ env.RELEASE_TAG }}
+          name: Release ${{ env.RELEASE_TAG }}
+          target_commitish: ${{ github.sha }}
+          token: ${{ github.token }}